Quick Overview

Find the maximum path sum anywhere in a binary tree represented by value and child-index arrays. Validate the entire structure, handle all-negative values, distinguish extendable from complete paths, and use iterative postorder for trees with up to 200,000 nodes.

Maximum Path Sum in an Indexed Binary Tree

Company: Newrelic

Role: Software Engineer

Category: Coding & Algorithms

Difficulty: hard

Interview Round: Technical Screen

Overview: Find the maximum path sum anywhere in a binary tree represented by value and child-index arrays. Validate the entire structure, handle all-negative values, distinguish extendable from complete paths, and use iterative postorder for trees with up to 200,000 nodes.

Loading…